/*
 * Copyright 2008 Carnegie Mellon University
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, 
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package edu.cmu.lti.sepia.api.processor;

import javax.servlet.http.HttpServletRequest;

import org.json.JSONObject;

import edu.cmu.lti.sepia.api.json.JsonAction;
import edu.cmu.lti.sepia.data.db.NuggetDAO;
import edu.cmu.lti.sepia.data.db.SQL;
import edu.cmu.lti.sepia.data.db.TopicDAO;
import edu.cmu.lti.sepia.infra.topic.model.Nugget;
import edu.cmu.lti.sepia.util.ExceptionUtil;
import edu.cmu.lti.sepia.util.ServletUtil;

public class NuggetProcessor extends AbstractProcessor {
	
	@Override
	public JSONObject process( SQL sql, JsonAction action, HttpServletRequest request ) {
		ServletUtil servletUtil = new ServletUtil( request );
	
		String taskNameShort = servletUtil.readString( "taskNameShort", "" );
		String tool = servletUtil.readString( "tool", "" );
		int topicId = servletUtil.readInt( "topicId", -1 );
		int nuggetId = servletUtil.readInt("nuggetId", -1);
		Nugget nugget = NuggetDAO.parseRequest(request);
				
		 JSONObject json = new JSONObject();
	    try {
	      json.put("msg","succeeded");
		
    		if ( action.equals( JsonAction.AddNugget ) ) {
    			NuggetDAO.addNugget( sql, taskNameShort, nugget );
    			json = TopicDAO.convertTopics( TopicDAO.findById( sql, taskNameShort, tool, topicId ) );
    		} else if ( action.equals( JsonAction.DeleteNugget ) ) {
    			NuggetDAO.deleteNugget( sql, taskNameShort, nuggetId );
    			json = TopicDAO.convertTopics( TopicDAO.findById( sql, taskNameShort, tool, topicId ) );
    		}
	    } catch ( Exception e ) {
	      e.printStackTrace();
	      try {
	        json.put("exception", ExceptionUtil.exceptionToString(e));
	      } catch (Exception e2) {
	        e2.printStackTrace();
	      }
	    }
	    return json;
	  }
	
}
